SOHC car engine Opel Vectra A (petrol)

Single Overhead Cam Engine Specifications
Type, all models - 4-cylinder, in-line, water-cooled, transversely mounted at the front of the car. Single overhead camshaft with belt drive, acting on...

General Description of SOHC Engine
General information Engine - 4-cylinder, in-line with one or two overhead camshafts (depending on the model), mounted transversely on the front side of the...

Crankcase ventilation system — description and maintenance
Description 1. Crankcase ventilation system is available on all models, but systems may vary depending on the model. 2. Oil vapors and gases that have broken...

Compression Test — Description
Description 1. If you notice a loss of engine power or if you have misfires and the problem is not related to the ignition system or fuel system, a compression...

Basic operations performed without removing the engine from the vehicle
1. The following actions can be performed without removing the engine from the vehicle: Removal and installation the pressure reducing oil valve ( see Chapter...

Basic operations requiring engine removal
To perform the following steps, the engine must be removed from the vehicle: a) Replacing the crankshaft main bearings b) Removing and installing the...

Engine Removal Method
The engine can be removed either separately or together with the transmission. If no work is required on the transmission, it is recommended to remove the...

Engine — removal and installation (transmission remains in the car)
Note: A winch and lifting device will be required to perform this job. If the torque converter is removed from the transmission (even partially), there may be...

Engine and transmission — removal, separation, connection and installation
Note: A winch and lifting device will be required to complete this job. Removal 1. Proceed as described in Chapter 7 , items 1-18 inclusive. 2. Working in the...

Engine and Transmission Mounting Brackets — Replacement
Note: New left and right engine/transmission to body mount bracket bolts must be used during installation. 1. The engine/transmission assembly is held in the...

Disassembling and assembling the engine — general description
General description 1. Ideally, the engine should be mounted on a special stand, but if one is not available, place the engine on a heavy workbench at a...

Toothed drive belt and sprockets (without automatic tensioning mechanism) — removal, installation and adjustment
Note: A bi-pedal puller may be required to remove the crankshaft sprocket on N16 NZ2, 1.8 and 2.0 litre engines. Some of the later 1.4 and 1.6 litre engines,...

Toothed drive belt and tensioner (1.4 and 1.6L models, except C16NZ2) — removal, installation and adjustment
Removal 1. Remove the outer drive belt covers as described in Chapter 11 , points 1-5. 2. To lock the tensioner in the position for removal and installation,...

Timing Belt Cover Opening, 1.4L and 1.6L Models — General Description
The rear timing belt cover, fitted to 1991 and 1992 models with 1.4 and 1.6 litre engines, contains a small opening just above the oil pump housing. Under...

Toothed drive belt and tensioner mechanism (C16NZ2, 1.8 and 2.0 l) — removal, installation and adjustment
Removal 1. Since 1993, engines have been using a modified spring for the automatic tensioning mechanism of the toothed drive belt (see illustration). The...

Front camshaft oil seal — removal and installation
Removal 1. The front camshaft oil seal can be replaced without removing the engine from the vehicle, by removing only the camshaft. 2. Remove the timing belt...

Rear camshaft oil seal — removal and installation
Removal 1. The rear camshaft oil seal can also be replaced without removing the engine from the vehicle, by removing only the camshaft. 2. Remove the...

Camshaft housing and camshaft — general description
Note: When removing the camshaft housing, the engine must be cold. When installing, use new cylinder head bolts and sealant. Also, see point 3 before starting...

Camshaft housing and camshaft — disassembly, inspection and assembly
Disassembly 1. Remove the camshaft housing from the cylinder head as described in Chapter 18 , proceed as follows. 2. Remove the distributor and associated...

Camshafts, repair dimensions for models C16NZ2, 1.8 and 2.0 liters — general description
1. Camshafts and casings for these engines are divided during production into one of two size groups; standard and increased size 0.10 mm. Please note that...

Cylinder head — removal and installation (engine in a car)
Note: When removing the cylinder head, the engine must be cold. Do not remove the head from a hot engine. When installing, use new mounting bolts and a new...

Cylinder head — removal and installation (engine removed)
Note: When installing, use new head bolts and a new gasket; when installing the camshaft cover, sealant will be required. The stated tightening torques apply...

Cylinder head — disassembly and assembly
Note: You will need a valve spring compressor to perform this job. Use new valve stem seals when reassembling. Disassembly 1. After removing the cylinder head...

Cylinder head — inspection and restoration
Note: Consult your dealer for advice before resurfacing valves or lapping valve seats. This is to strengthen the valve seats for use with unleaded gasoline....

Hydraulic valve lifters — inspection
Inspection 1. On engines with high mileage or on which maintenance has not been performed regularly (especially oil change), there is a possibility that the...

Flywheel — removal, inspection and installation
Note: Use new flywheel mounting bolts when installing. Some models are equipped with a pot-shaped flywheel. Removal 1. Remove the clutch ( Section 6 ) and...

Drive Disc (Automatic Transmission) — Removal and Installation
Removal 1. Remove the transmission ( Section 7B ). 2. Lock the drive disc from rotating by pinching the ring gear with a large screwdriver or other suitable...

Front Crankshaft Oil Seal — Replacement
1. Remove the toothed drive belt and rear cover as described in Chapter 11 . 2. Remove the woodruff key from the end of the crankshaft. 3. Punch or drill a...

Rear Crankshaft Oil Seal — Replacement
1. After removing the engine from the vehicle, remove the flywheel or drive disc (depending on the model), as described in Chapters 25 and 26 . 2. Punch or...

Pallet — removal and installation
Note: When installing the pan, replace the gaskets and use sealant on the oil pump and rear main bearing. Removal 1. If the engine is in the vehicle, proceed...

Oil pump — removal and installation
Removal 1. Remove the timing belt, sprockets and rear drive belt cover as shown in Chapter 11 . 2. Remove the oil pan, oil pump inlet pipe and oil pan...

Oil pump — disassembly, inspection and assembly
Note: Use a new front crankshaft oil seal during assembly. Disassembly 1. After removing the oil pump as described in Chapter 30 , then proceed as follows. 2....

Pistons and connecting rods — removal and installation
Note: Use new connecting rod cap bolts when installing. Removal 1. Remove the cylinder head as described above in Chapter 20 . 2. Remove the oil pan, oil pump...

Pistons and connecting rods — inspection and maintenance
Inspection 1. Check the mating surfaces of the connecting rod caps to see if there have been any attempts to assemble them in the wrong orientation. This is...

Crankshaft and bearings — removal and installation
Note: Use new main bearing cap bolts when installing. Removal 1. After removing the engine, proceed as follows. 2. Remove the cylinder head as described in...

Crankshaft and bearings — inspection
Inspection 1. Check the condition of the crankshaft journals and main journals for wear or scratches, and check them for out-of-roundness and taper. If the...

Cylinder Block and Channels — Inspection and Maintenance
Inspection 1. Check the cylinder bores for taper, out-of-roundness, and scratches. Start at the top of the bores. If they are worn, a small ridge will be...

Inspection and Maintenance — General Description
1. Wipe the engine completely, clean all components and inspect them for signs of wear. Each component should be inspected and, if necessary, replaced or...

Preparing for launch after major repairs
1. Make a final check to make sure everything is connected to the engine and that there are no rags or tools left in the engine compartment. 2. Check that the...

Engine fault detection
The engine does not start The contacts of the wires with the battery terminals are loose or corroded ( Section 1 ) Low or defective battery ( Section 5 ) The...

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